Subject: Re: [Healeys] Exhaust manifold crack repair

From: Bob Spidell via Healeys <[email-masked]>
Date: Thu, 26 Aug 2021 07:45:40 -0700

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They're cast iron. I haven't attempted it, but it was discussed in one 
of my welding classes. It's a specialized process, involving precise 
pre-heating of the metal, but it can be done if the welder is 
experienced with it.

On 8/26/2021 6:23 AM, Tom Felts via Healeys wrote:
> Anyone ever had a manifold crack repaired?  If so, how did you do it.  
> What type of metal is it---cast iron?
>

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    They're cast iron. I haven't attempted it, but it was discussed in
    one of my welding classes. It's a specialized process, involving
    precise pre-heating of the metal, but it can be done if the welder
    is experienced with it.<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 8/26/2021 6:23 AM, Tom Felts via
      Healeys wrote:<br>
    </div>
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cite="mid:[email-masked]">
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      <div>Anyone ever had a manifold crack repaired?  If so, how did
        you do it.  What type of metal is it---cast iron?</div>
      <br>
    </blockquote>
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From: Michael Salter via Healeys <[email-masked]>
Date: Thu, 26 Aug 2021 13:46:19 -0400

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The manifold on 1500 Spitfires with catalytic converters used to crack
badly.
We frequently repaired them by braizing and it seemed to hold up well.

M

On Thu., Aug. 26, 2021, 9:29 a.m. Tom Felts via Healeys, <
[email-masked]> wrote:

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<div dir=3D"auto">The manifold on 1500 Spitfires with catalytic converters =
used to crack badly.=C2=A0<div dir=3D"auto">We frequently repaired them by =
braizing and it seemed to hold up well.</div><div dir=3D"auto"><br></div><d=
iv dir=3D"auto">M</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr=
" class=3D"gmail_attr">On Thu., Aug. 26, 2021, 9:29 a.m. Tom Felts via Heal=
eys, &lt;<a href=3D"mailto:[email-masked]">[email-masked]</=
a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 =
0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div>Anyone ever=
 had a manifold crack repaired?=C2=A0 If so, how did you do it.=C2=A0 What =
type of metal is it---cast iron?</div></div>_______________________________=
________________<br>
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From: Al Fuller <[email-masked]>
Date: Thu, 26 Aug 2021 22:15:26 -0400

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I had the cast iron side cover on my BT-7 that holds the generator crack. A
guy local to the Detroit area repaired it and I had no further issues with
it. I'm pretty sure he said he welded it as opposed to brazing, due to the
strength required to support the generator or alternator. He also said many
to most welders wouldn't have been able to handle it.

So my take away was it CAN be done, but but probably not by most of us.

On Thu, Aug 26, 2021, 10:46 AM Bob Spidell via Healeys <
[email-masked]> wrote:

> They're cast iron. I haven't attempted it, but it was discussed in one of
> my welding classes. It's a specialized process, involving precise
> pre-heating of the metal, but it can be done if the welder is experienced
> with it.
>
>
> http://autox.team.net/mailman/options/healeys/[email-masked]
>
>

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<div dir=3D"auto">I had the cast iron side cover on my BT-7 that holds the =
generator crack. A guy local to the Detroit area repaired it and I had no f=
urther issues with it. I&#39;m pretty sure he said he welded it as opposed =
to brazing, due to the strength required to support the generator or altern=
ator. He also said many to most welders wouldn&#39;t have been able to hand=
le it.<div dir=3D"auto"><br></div><div dir=3D"auto">So my take away was it =
CAN be done, but but probably not by most of us.</div></div><br><div class=
=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Aug 26, 2021=
, 10:46 AM Bob Spidell via Healeys &lt;<a href=3D"mailto:[email-masked]=
.net">[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"g=
mail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-l=
eft:1ex">
 =20
   =20
 =20
  <div>
    They&#39;re cast iron. I haven&#39;t attempted it, but it was discussed=
 in
    one of my welding classes. It&#39;s a specialized process, involving
    precise pre-heating of the metal, but it can be done if the welder
    is experienced with it.<br>
    <br>
    <br>
    <div>On 8/26/2021 6:23 AM, Tom Felts via
      Healeys wrote:<br>
    </div>
    <blockquote type=3D"cite">
     =20
     =20
      <div>Anyone ever had a manifold crack repaired?=C2=A0 If so, how did
        you do it.=C2=A0 What type of metal is it---cast iron?</div>
      <br>
    </blockquote>
    <br>
  </div>

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